Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Category
Mineral Like Byproduct
Browse mineral like byproduct specimens identified by the Rock Identifier community.
Jasper
Silicon Dioxide (SiO2)
sedimentary
Sandstone Concretion
Sedimentary Concretion (SiO2 or CaCO3 cemented)
sedimentary
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz (Milky to Clear)
Silicon Dioxide (SiO2)
mineral
Fuchsite (Chrome Mica)
K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Granite
Granite (Phaneritic intrusive igneous rock) - Composition: SiO2, Al2O3, K2O, Na2O
igneous
Granite
Granite (Alkali-feldspar, Quartz, and Plagioclase composition)
igneous
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Mineral
Basalt
Basalt (Mafic Extrusive)
igneous
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2)
Sedimentary Rock
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granite (Alkali-feldspar Granite)
Felsic Plutonic Rock (Primary minerals: Quartz SiO2, Orthoclase KAlSi3O8, Plagioclase (Na,Ca)AlSi3O8)
igneous
Granite
Phaneritic plutonic felsic rock (primarily Quartz, Feldspar, and Mica)
igneous
Granite
Granite (Phaneritic Igneous Rock)
igneous
Granite
Granitic intrusive igneous rock
igneous
Diamond
Native Carbon (C)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz (Beach Pebble)
Quartz (Silicon Dioxide, SiO2)
mineral
Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)
Epidote with Black Hornblende and White Quartz mixture
metamorphic
Megalodon Shark Tooth Fossil
Otodus megalodon (fossilized in sedimentary matrix)
sedimentary
Coprolite
Fossilized feces (various taxa)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
sedimentary
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
igneous
Chert (often called Flint)
Microcrystalline to cryptocrystalline quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral / Sedimentary
Greywacke
Dirty Sandstone (Lithic wacke)
sedimentary
Quartz with Mica (Gneissic or Pegmatitic origin)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(F,OH)2)
metamorphic
Sandstone
Arenite (SiO2 primarily)
sedimentary
Amber
Succinite (fossilized resin)
mineral
Polymer Clay (Mock Mineral)
Polyvinyl chloride (PVC) with plasticizers and pigment
Synthetic material (Not a natural rock/mineral)
Chert (Yellow Jasper)
Silicon Dioxide (SiO2)
sedimentary
Limestone (Ocherous)
Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)
sedimentary
Ironstone with Pyrite
Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)
sedimentary
Puddingstone (Jasper-Conglomerate)
Conglomerate (Silicon Dioxide, SiO2 with impurities)
sedimentary
Vesicular Basalt (Amygdaloidal)
Vesicular Basalt (Fe-Mg rich extrusive volcanic rock)
igneous
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
not a rock (man-made polymer)